2012 Yukon XL SLT 1500 ABS question

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solosys

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From the wife “Drove the truck, everything was fine. Pulled in to parking lot, turned off truck (AC was left in on position), exited the truck. Shopped. Came back to truck, got in and turned it on. Started fine, no issues. Put truck in drive and proceeded to go forward to exit the parking spot and car felt like it had no movement. No idle to it. Pressed has harder and it moved but felt like I was towing something. Heavy feeling, not a lot of power. Went to brake and brake pedal wouldn’t press down fully, stayed in almost exact position as when not pressed. Didn’t like how it felt so moved in to another spot and brake pedal still felt like you couldn’t push down. Pressed those four buttons and the ABS with circle code came on and the car skidding and traction wording. Turned off vehicle and restarted after two minutes and all is fine now. “

Any thoughts? Interestingly enough my Chevy dealer did a brake flush a few weeks ago.
 
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solosys

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Did she have the parking brake on and not realize it?

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Looks like it’s the brake switch. C0161 code. Symptom seems to be consistent with a “Stuck in park” video I saw on YouTube

058BE54D-F063-418A-A628-2595C1A4360D.jpeg
 
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solosys

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So the million dollar question is where is the brake switch on a 2012 Yukon? I don't see anything that looks like the part I bought.

9F8D18D0-6970-4422-B3B1-B3C0C7AB640B.jpeg 5976D289-7250-4E7D-A4A3-6D9911E00F63.jpeg 7DA74C00-FAC5-4148-978B-15E2FBF17F3B.jpeg
 

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